1, switch output week
public class Week{
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int shu =1;
while(shu!=0) {
System.out.print("Day of the week: ");
shu =input.nextInt();
switch(shu) {
case 1:
System.out.println("Today is Monday");
break;
case 2:
System.out.println("Today is Tuesday");
break;
case 3:
System.out.println("Today is Wednesday");
break;
case 4:
System.out.println("Today is Thursday");
break;
case 5:
System.out.println("Today is Friday");
break;
case 6:
System.out.println("Today is Saturday");
break;
case 7:
System.out.println("Today is Sunday");
break;
}
if(shu>=7&&shu<=10) {System.out.println("Please re-enter!");
continue;
} System.out.println("Program end!"); }
}
}
2. Air ticket price
public class Fjc {
public static void main(String[] args) {
double money = 5000; //Air ticket price
Scanner input = new Scanner(System.in);
System.out.print("Please enter the month you travel:\n");
if (input.hasNext() ) {
int num = input.nextInt();
System.out.println("Would you like to choose first class or economy class? Enter 1 for first class and 2 for economy class");
int choose = input.nextInt();
switch (num) {
case 9:
case 8:
case 7:
case 6:
case 5:
case 4:
if (choose == 1) {
money = money * 0.9;
break;
}
if (choose == 2) {
money = money * 0.8;
break;
}
default:
if (choose == 1) {
money = money * 0.5;
break;
}
if (choose == 2) {
money = money * 0.4;
}
break;
}
System.out.println("Your ticket price is: " + money);
} else {
System.out.println("Please enter the correct number");
}
}
}
3. Study plan
public class Curricula {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Please enter the day of the week: ");
int dayofWeek = input.nextInt();
switch (dayofWeek) {
case 1:
case 3:
case 5:
System.out.println("Learn to program");
break;
case 2:
case 4:
case 6:
System.out.println("Learn English");
break;
default:
System.out.println("休息");
}
}
}
4. Mini calculator
public class Calculator {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter your first operand:");
double num1 = input.nextDouble();
System.out.println("Please enter your second operand:");
if (input.hasNextDouble() ) {
double num2 = input.nextDouble();
System.out.println("Please choose your operation mode: 1 addition, 2 subtraction, 3 multiplication, 4 division");
int choose = input.nextInt();
switch (choose) { //Use switch to select calculation method
case 1:
System.out.println("Calculation result: " + num1 + "+" + num2+ "=" + (num1+ num2));
break;
case 2:
System.out.println("计算结果:" + number + "-" + number1 + "=" + (num1 - num2));
break;
case 3:
System.out.println("计算结果:" + number + "*" + number1 + "=" + (num1 * num2));
break;
case 4:
System.out.println("计算结果:" + number + "/" + number1 + "=" + (num1 / num2));
break;
}
} else {
System.out.println("Please enter the correct number");
}
}
}